Question

# A student heats a beaker containing ice and water. He measures the temperature of the content of the beaker as a function of time. Which of the following (Fig.) would correctly represent the result? Justify your choice.

A
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B
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C
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D
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Solution

## The correct option is D Explanation for correct option(D)Latent heat of fusionThe heat energy required to change $1\mathrm{kg}$ of a solid into liquid at atmospheric pressure at its melting point is known as the latent heat of fusion.This process results in the molecules within the substance becoming less organized.Heating a beaker containing ice and waterThe mixture's temperature would be zero at the beginning of the experiment since water and ice are in equilibrium.Due to the latent heat of fusion, the temperature of the beaker's contents does not initially increase.As a result, the temperature remained constant for a while.The temperature of the water slowly rises as the mixture is heated further by the students.The temperature of content in the beaker as a function of time is as follows:Explanation for incorrect optionsFigure (D) measures the temperature of the content of the beaker as a function of time correctly.Hence. all the other options (A), (B) and (C) are incorrect.Therefore, the correct portion is (D).

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